Construction of 'Theodore Roosevelt' Ahead Of Schedule And Under Budget
Advanced Computer Technology And Huge Superlifts At Newport News Shipbuilding Had At Launching Saved $42.1 Million At the launching of the aircraft carrier Theodore Roosevelt, Newport News Shipbuilding president and CEO Edward J. Campbell cited some of the advancements that allowed dramatic savings in time and money in the construction of the latest launched ship of the Nimitz Class. These included computer technology, huge superlifts, and more experience in carrier construction.
He said, "The Roosevelt keel unit weighed 475 tons. It equaled nine keel assemblies on earlier Nimitz Class carriers. The superlift unit you see behind me is the keel of the Abraham Lincoln. It weighs 840 tons, almost twice as much as Roosevelt's keel. It's the equivalent of 20 such assemblies on older carriers." The 1,000+-foot-long, 93,000- ton Roosevelt seems to deserve her many accolades. Thanks to the use of extensive modular design and construction techniques, she is being built far ahead of contract schedule. According to Secretary of Defense Caspar Weinberger, principal speaker at the launching ceremony, the ship's construction was then 17 months ahead of schedule and $42.1 million under budget.
The Virginia shipyard got off to a fast start with the Theodore Roosevelt, the fourth of the Nimitz Class carriers. The yard jumped ahead of schedule by completing in 23 months with the Roosevelt what it took 40 months to complete with her predecessor, the carrier Carl Vinson. The Roosevelt is one of three Nimitz Class carriers now under construction at the yard; the others are the Abraham Lincoln and the George Washington.
Advanced technology has enabled progress to be accelerated since the Roosevelt's keel was laid in late 1981. For the first time at the yard, engineers there used structural Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) to cut the steel for the carrier, helping speed fabrication dramatically.
Once the units came out of Steel Fabrication, they were joined with other assemblies and preoutfitted with much of the piping, ventilation, and electrical equipment they would need.
Computers also controlled tolerences and the manufacturing process so the modules fit together perfectly once they were joined to the ship. The result: the accuracy built into the design function automatically transfers to the manufacturing side.
Another reason for the ahead-ofschedule performance is more extensive use of the yard's 23-story, 900-ton-capacity gantry crane. With it the yard is building larger subassemblies, and putting together the bigger units on assembly platens rather than in the drydock. It is much easier for this work to take place at the shop level.
Preoutfitting was greater on the Roosevelt than on earlier carriers.
Doing advance work and lifting much larger sections results in fewer lifts and saves time and money. A superlift for the Roosevelt, for example, was between 700 and 900 metric tons. In erecting the ship's flight deck, which is 1,092 feet long and 257 feet, wide, 14 multi-ton assemblies were lowered into the drydock. On previous carriers, it took as many as 150 lifts to form the flight deck.
Advanced technology is also paying off on the construction of the fifth and six Nimitz Class carriers at the Newport News yard. At mid- 1985, the construction of the Abraham Lincoln and the George Washington was reported by the Navy to represent $450 million in savings.
Can computer technology, huge superlifts, and more carrier construction experience continue to pay dividends? Can the success story of the Theodore Roosevelt be topped?
Newport News Shipbuilding thinks so and continues to pursue every new option for increased efficiency and lower costs.
For further information on Newport News Shipbuilding and their facilities, Circle 93 on Reader Service Card
Other stories from December 1985 issue
- United States Cruises Applies To M a r A d For $150-Million Title XI page: 4
- PA Series Heavy Fuel Diesel Now Available From Fairbanks Morse page: 6
- Six-Page Color Brochure On Energol Lubricants Offered Free By BP Marine page: 6
- Getty Fleet Orders Lips Speed-Adapted Propellers To Increase Efficiency page: 6
- Karl Senner Offers Free Color Brochure On Reintjes Marine Gearboxes page: 6
- OMSA Elects New Officers —Congressman Warns Of California Plan' page: 8
- Birka Line Cruise Ship Launched At Valmet's Helsinki Shipyard page: 8
- Fire Combat, Inc. Offers 10-Page Manual On Fire Suppression Systems page: 9
- Texaco Appoints Quegan General Manager, Marine Department page: 10
- Fernstrom Elected President And CEO Of American Ship Building page: 10
- New Briefcase Computer For Marine Industry From NAV-COM page: 12
- Furuno USA Introduces New Doppler Speed Log And ARPA Line page: 12
- W. Anthony Watt Heads Sales And Marketing Division At Moran Towing page: 14
- Marinette Delivers First Of Ten Torpedo Weapons Retrievers page: 14
- Bassett Named President Of Interocean Management page: 14
- Kockums To Build Ferry With First Coal-Fired Marine Steam Engines In 30 Years page: 16
- COSCO And McMullen Form New Company— COSCO North America page: 17
- Cunard Gives $115-Million Contract To Lloyd Werft To Convert QE2 To Diesel And Alter Accommodations page: 17
- Harnischfeger To Build World's Largest Dipper/Clamshell Dredge page: 18
- Bethlehem Steel Dedicates Its New Sabine Yard In Port Arthur, Texas page: 18
- Totem To Acquire Controlling Interest In Interocean Steamship Corp. page: 20
- OUTSTANDING OCEANGOING SHIPS OF 1985 page: 22
- NOTABLE CONVERSIONS OF 1985 page: 44
- Bender Shipbuilding Wins $4.5 Million In Contracts page: 49
- Construction of 'Theodore Roosevelt' Ahead Of Schedule And Under Budget page: 50
- Magnavox Introduces New Generation SatCom And New GPS/Transit SatNav Receivers page: 51
- GPS/Transit SatNav Receivers page: 52
- Network 90, Integrated Marine Management System For Reduced Costs And Maximized Profits page: 55
- SHIPBOARD COMPUTER SURVEY page: 58
- Ellicott Machine Corporation Announces Personnel Changes page: 68
- Vapor Corporation Announces New Sphere Matrix Technology page: 68
- U.S. NAVY SHIP PROCUREMENT Second Quarterly Update—November 1985 page: 70
- MSI Conducting Tests For Proposed Canadian Ferry With Voith Schneider Propulsion page: 77
- Design Improvements In EMD's 645FB Diesel Provide Higher Horsepower, Better Fuel Economy page: 78
- Perko Presents The 200 Series International Navigation Lights page: 81
- Coast Guard Completes Installation Of Advanced Navigational Aid In N.Y. Harbor page: 85
- Macmeter Offers Metering Protection page: 91
- MARDATA Named North American Agent For Lloyd's Information Services page: 91